diff --git a/src/java/org/apache/nutch/crawl/CrawlDbReader.java b/src/java/org/apache/nutch/crawl/CrawlDbReader.java
index dfcc87a..603b2e3 100644
--- a/src/java/org/apache/nutch/crawl/CrawlDbReader.java
+++ b/src/java/org/apache/nutch/crawl/CrawlDbReader.java
@@ -979,7 +979,7 @@
 
     if (args.length < 2) {
       System.err.println(
-          "Usage: CrawlDbReader <crawldb> (-stats | -dump <out_dir> | -topN <nnnn> <out_dir> [<min>] | -url <url>)");
+          "Usage: CrawlDbReader <crawldb> (-stats | -dump <out_dir> | -topN <nnnn> <out_dir> [<min>] | -url <url> | -listen <port>)");
       System.err
           .println("\t<crawldb>\tdirectory name where crawldb is located");
       System.err
@@ -1002,6 +1002,10 @@
           "\t\t[-sample <fraction>]\tOnly process a random sample with this ratio");
       System.err
           .println("\t-url <url>\tprint information on <url> to System.out");
+      System.err
+        .println("\t-listen <port> [-keepClientCnxOpen]\tlisten on <port> for URLs and");
+      System.err
+            .println("\t\t\tsend information about <url> back");
       System.err.println(
           "\t-topN <nnnn> <out_dir> [<min>]\tdump top <nnnn> urls sorted by score to <out_dir>");
       System.err
diff --git a/src/java/org/apache/nutch/crawl/LinkDbReader.java b/src/java/org/apache/nutch/crawl/LinkDbReader.java
index 5d422b4..4cacd81 100644
--- a/src/java/org/apache/nutch/crawl/LinkDbReader.java
+++ b/src/java/org/apache/nutch/crawl/LinkDbReader.java
@@ -225,13 +225,17 @@
   public int run(String[] args) throws Exception {
     if (args.length < 2) {
       System.err
-          .println("Usage: LinkDbReader <linkdb> (-dump <out_dir> [-regex <regex>]) | -url <url>");
+          .println("Usage: LinkDbReader <linkdb> (-dump <out_dir> [-regex <regex>] | -url <url> | -listen <port>)");
       System.err
           .println("\t-dump <out_dir>\tdump whole link db to a text file in <out_dir>");
       System.err
           .println("\t\t-regex <regex>\trestrict to url's matching expression");
       System.err
           .println("\t-url <url>\tprint information about <url> to System.out");
+      System.err
+          .println("\t-listen <port> [-keepClientCnxOpen]\tlisten on <port> for URLs and");
+      System.err
+          .println("\t\t\tsend information about <url> back");
       return -1;
     }